package operation;

import book.Book;
import book.BookList;

import java.util.Scanner;

public class DelOperation implements IOperation{
    @Override
    public void work(BookList bookList) {
        System.out.println("删除一本书");
        System.out.println("请输入你要删除的图书名：");
        Scanner sca = new Scanner(System.in);
        String bookName = sca.nextLine();

        int currentSize = bookList.getUsedSize();
        int pos =-1;

        for(int i = 0; i < currentSize; i++){
            Book book = bookList.getBook(i);
            if(book.getName().equals(bookName)){
                pos = i;
                break;
            }
        }
        if(pos == -1){
            System.out.println("没有你要找的书");
            return;
        }

        for(int j = pos; j < currentSize - 1; j++){
            Book book = bookList.getBook(j + 1);
            bookList.setBook(j,book);
        }
        bookList.setUsedSize(currentSize-1);
        bookList.setBook(currentSize-1,null);
        System.out.println("删除成功");


    }
}
